x^3=40

Lösung

x^{3} = 40

x = 235, x = - 35 + 353 i, x = - 35 - 353 i

Schritte zur Lösung

x^{3} = 40

Für

x^{3} = f (a)

sind die Lösungen

x = 3 f (a), 3 f (a) \frac{- 1 - 3 i}{2}, 3 f (a) \frac{- 1 + 3 i}{2}

x = 340, x = 340 \frac{- 1 + 3 i}{2}, x = 340 \frac{- 1 - 3 i}{2}

340 = 235

Vereinfache

340 \frac{- 1 + 3 i}{2} : - 35 + 353 i

Vereinfache

340 \frac{- 1 - 3 i}{2} : - 35 - 353 i

x = 235, x = - 35 + 353 i, x = - 35 - 353 i

- x^{3} + 27 x - 54 = 0

roo t s x^{4} - 5 x^{2} + 4

x^{4} - 2 x^{3} + 6 x^{2} - 18 x - 27 = 0

4 s^{3} + 15 s^{2} + 18 s + 5 = 0

2 x^{3} - 7 x^{2} - 5 x + 4 = 0